Skip to main content
Store
Dictionary
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Store
Mugs
Tees
Hoodies
Beanies
Halloween
Request a word
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
A fallacy where someone invokes "rationality" as a self-evident standard that their position meets and yours doesn't, without specifying what rationality means or why their view is more rational. "Be rational!" becomes a way of saying "agree with me." The appeal is fallacious when it treats rationality as a fixed, universal property rather than a contested concept with multiple definitions and traditions. Often used to dismiss emotional, intuitive, or experiential ways of knowing as "irrational."
Text fits
Save
Cancel